Intake ventilator



Oct. '7, 1947.

G. C. BREIDERT INTAKE VENTILATOR Filed May 2, 1944 [N VENTOR G E DT'C/E' C. Bra-J dart BY ATTO NEY Patented Oct. 7, 1947 UNITED STATES PATENT OFFICE INTAKE VENTILATIOR George C. Breidert, Glendale, Calif.

Application May 2, 1944, Serial No. 533,703

My present invention has to do with ventilators.

Conventional ventilators of the type which are actuated by vacuum created by the action of natural air currents, operate to exhaust foul air and fumes from the building or structure uponwhich they are mounted. However, it is often desired to bring fresh air into the building or structure from the exterior and heretofore, in order to accomplish the latter result, it has been deemed necessary to utilize power-driven fans or blowers for the purpose.

It is therefore a principal object of my present invention to provide an air intake ventilator which is operable in response to natural air currents playing upon the ventilator at the exterior of a building or structure.

It is a further object to provide a simple and economical intake ventilator which will operate efliciently without the aid of a power-driven blower and which does not require manual or other setting or adjustment.

The invention has other objects and features of advantage which will become apparent from the detailed explanation of a presently preferred ernbodiment now to be given, for which purpose I shall refer to the accompanying drawings, in which:

Fig. 1 is a cross section taken on the line l-'-l of Fig. 2; and

Fig. 2 is a longitudinal section taken on line 2--2 of Fig. 1.

Generally speaking, I accomplish the principal aim of my invention by a novel construction and arrangement of baffles in the exterior ventilator head so that natural air currents playing upon the head from any direction create apressure in the inlet conduit instead of a vacuum.

In the drawings, I show a ventilator head generally designated H, which is adapted to be mounted upon the roof of a building or upon the superstructure of a boat or the like with its intake conduit 5 in communication with the area to be ventilated.

The head is comprised of a top end wall 6 and a bottom end wall I with circumferentially spaced outer baiiles or deflectors 8 and circumferentially spaced inner baffles or deflectors 9 disposed lengthwise between the end walls in concentric rows and secured to the end walls by rivets or otherwise securing thereto the attaching flanges 8a, 9a.

Top end wall 6 has an axial opening itwhich is normally covered by a cover lid I2 secured to the wall 6 as by screws l4.

Bottom end wall 1 has an axial opening l5 within which the peripheral edge of the conduit 5 1 Claim. (01. 98-64) is secured. The row of inner deflectors 9 defines an inlet opening or passageway l'l communicating at its bottom end with the conduit 5. Passageway I! is divided by walls l8 into four air passageways P.

Each of the inner deflectors 9 is T-shaped and has its central leg portion 29 disposed radially outwardly to a point spaced outwardly beyond the plane of the adjacent ends of the outer baffles 8, and between the adjacent ends oieach ad-' jacent pair of the cross portions 2| of the deflectors 9, a deflector 25 is mounted, as by having its side edges welded to the adjacent side edges of the cross portions 2!. Each of the members 25 has a plurality of alined, diagonally downwardly and inwardly disposed ducts or flues 28 which deflect air downwardly into the respective passageways P. That is, each passageway P is defined by the adjacent portions of two inner deflectors H in conjunction with the interposed deflector member or plate 25.

Each of the outer deflectors 8 is substantially V-shaped in cross section, with its apex disposed outwardly, and has a central wall portion which extends from the apex of the deflector in wardly to abut the adjacent deflector or plate The outer deflectors 8 are curved at the points of their intersection with the portion 36, and the portions 2| of the inner deflectors 9 are curved where they intersect the respective legs 26, so that no sharp corners are presented to interfere with the incoming air streams.

Thus a pressure chamber 35 is defined by each set of adjacent deflector portions or members 8, 30, 20, Z! and 25, each of which chambers has its inlet between an end of an outer deflector 8 and the portion 20 of the adjacent inner deflector SI, and has its outlet into one of the passageways P, and thus into the area being ventilated, through the several ducts 26 of the adjacent member 25. Each leg 29 0f the inner deflectors presents a right angle deflector 36 at its outer end to catch and direct into the chambers 35 air currents which might otherwise pass the head.

In operation the air currents striking the head H are deflected in the course shown by the arrows, entering the passageway P through the ducts 26, causing sufiicient pressure in the passageways P to force the air downwardly through conduit 5 into the area being ventilated.

Although an air current may strike the head at only one side, it cannot pass transversely through the head in view of the presence of the walls 3, and it therefore must pass downwardly through conduit 5.

When the head is mounted on the superstructure of a moving object such as a boat, the sway or rocking movement of the boat tends to accentuate the operation of the ventilator since as the head is thus rocked in the direction from which the natural air currents approach, it causes the air to be forced inwardly through the ducts 26 with greater pressure than would be produced by the velocity of the air current alone.

While, in the foregoing, I have resorted to considerable detail of structure and association of parts in describing a particular example of my invention, I wish it to be understood that I have done so merely to make my invention understood and that I do not limit my invention to such details. On the contrary, my invention is only to be limited as appears in the appended claim.

I claim:

A ventilating device for introducing air into a structure, comprising top and bottom end walls, the bottom end wall having an axial opening therethrough, a vertically disposed substantially annular inner Wall mounted between the end walls and defining an axial passageway communicating with said opening, a circumferential row of V-shaped outer bafiles surrounding the inner wall in radially spaced relationship thereto and being laterally spaced apart to provide airadmitting openings therebetween, the outer baffles being substantially V-shaped in crosssection and each having its apex disposed outwardly, said inner wall having portions providing circumferentially spaced rows of flues, which respective rows have their inlet ends opposite the respective outer baffies and have their discharge ends opening into said passageway, vertically disposed wall members extending radially from medially of said respective rows of flues to the apex of the respective outer bailies, vertically extending wall members projecting radially from points medially between adjacent rows of fines outwardly through said respective openings between the outer fiues, and vertically extending wall members disposed radially from the longitudinal axis of the first-mentioned passageway and dividing said passageway into separate axially disposed conduits each communicating with a row of flues.

GEORGE C. BREIDERT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

